Dynamic VoiceXML and PHP in entreprise – Part 2

In this second part of Dynamic VoiceXML and PHP in entreprise, I’ll try to talk about the naviguation menu and the first part of coding which is the text announce.

Navigation module

The naviguation module is an advanced PHP Voice Plugin allow
to create a dynamic menu to naviguate via voice. The module can read a list of
service offered by the company and the user can say : Next, previous, repeat to
respectively listen to the invite of the next menu, the previous one or to
repeat the current.

If the user find the suitable menu he can say : OK, to
confirm his choice and run the application associated to that menu.

It will allow us to create a dynamic menu without entering in
the details of the VoiceXML itself.

Usage :

<br /> $app->load(“naviguator”,array([id], [message], [script], [lang]));<br />

Where :

[id] = form identifier

[message] = optional welcome message

[script] = table of elements to announce as services

[lang] = optional language of the module

A sample usage of this module is the following :

<br /> $app=new gonx_vxml;<br /> $app->start_vxml(“”, “”, “en”, “”, “”, “2.0”);<br /> $app->start_catch(“connection.disconnect”); $app->start_exit_c(); $app->end_catch();<br /> $app->load(“naviguator”,array(“home”,”Welcome.”,array(“service1″,”service2″),”en”));<br /> $app->end_vxml();<br /> $app->generate();<br />
Notice : In this module we have fixed the destination url to service.php?cat=[cat]

Part 1 Coding : Announce text

With the naviguation module we have finished a first part of
the application, we’ll join the previous example with our database and try to
see the result :

<br /> /**<br /> * PHP Voice entreprise<br /> *<br /> * @author Ben Yacoub Hatem<br /> * @version $Id: 1.0 Mon Nov 15 20:32:12 CET 2004 20:32:12 by hatem EXP<br /> */<br /> // Config<br /> $CompanyName = “PHP Voice News”;<br /> $host = “localhost”; // MySQL host<br /> $user = “root”; // User login<br /> $pass = “”; // User passwd<br /> $db = “phpvoice”; // News database<br /> $category_tbl = “services”;<br /> $news_tbl = “content”;<br /> $query_cat = “SELECT name,id FROM $category_tbl order by id ASC”; // MySQL Query<br /> for categories<br /> // End config<br /> require_once(“../phpvoice/vxml.class.php”);<br /> // Database code<br /> $link = @mysql_connect($host, $user, $pass)<br /> or die(“Could not connect”);<br /> @mysql_select_db($db) or die(“Could not select database”);<br /> $result = @mysql_query($query_cat) or die(“Query failed”);<br /> $jscript = array();<br /> while ($line = @mysql_fetch_array($result, MYSQL_ASSOC)) {<br /> $jscript[$line[‘id’]] = utf8_encode($line[‘name’]);<br /> }<br /> mysql_free_result($result);<br /> mysql_close($link);<br /> // VoiceXML code<br /> $app=new gonx_vxml;<br /> $app->start_vxml(“”, “”, “en”, “”, “”, “2.0”);<br /> $app->start_catch(“connection.disconnect”); $app->start_exit_c(); $app->end_catch();<br /> $app->load(“naviguator”,array(“home”,”Welcome to $CompanyName.”,$jscript,”en”));<br /> $app->end_vxml();<br /> $app->generate();<br />

As you notice we separated configuration part so it could be
easily changed. In this example we have used  UTF-8 encoding, to avoid any error we can add an utf8_encode() to data retrieved from database, or we can force a different encoding :

<br /> $app=new gonx_vxml(“windows-1252”);<br />

Our first part is finished, we can start interact with PHP VoiceXML application to see the result :

S : Serveur / H : Humain
S = Welcome to PHP Voice News.
I'll list the services we offer.
You can say next, previous, or repeat, to move through the list.
When you hear the one you want, just say select.
S break
S = Latest news
H = Next
S = Products
H = Select
S = You selected service Products.
S redirect to service.php?cat=2.